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TECHNICAL PAPERS

Analysis of a Torsional Fluid Film Vibrator

[+] Author and Article Information
C. V. Suciu, M. D. Pascovici

Department of Machine Elements and Tribology, “Politehnica” University of Bucharest, 313 Splaiul Independentei, 79590 Bucharest 6, Romania

T. Iwatsubo

MS-1 Laboratory, Mechanical Engineering Department, Kobe University 1-1-1 Rokkodai, Nada, 657-8501 Kobe, Japan

J. Tribol 124(3), 480-485 (May 31, 2002) (6 pages) doi:10.1115/1.1454101 History: Received January 04, 2001; Revised June 26, 2001; Online May 31, 2002
Copyright © 2002 by ASME
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References

Harris, C. M., and Crede, C. E., 1968, Shock and Vibration Handbook, McGraw-Hill, New York.
Mu,  C., Darling,  J., and Burrows,  C. R., 1991, “An Appraisal of a Proposed Active Squeeze Film Damper,” ASME J. Tribol., 113, pp. 750–754.
Bonneau, O., and Fre⁁ne, J., 1994, “Numerical Study of a Flexible Rotor Mounted in an Active Squeeze Film Damper,” 4th International Conference on Rotor Dynamics, IFTOM, Chicago, pp. 327–331.
Suciu,  C. V., Bonneau,  O., Brun-Picard,  D., Fre⁁ne,  J., and Pascovici,  M. D., 2000, “Study of a Novel Squeeze Film Damper and Vibration Generator,” ASME J. Tribol., 122, pp. 211–218.
Suciu, C. V., Pascovici, M. D., and Iwatsubo, T., 2000, “Study of a Torsional Fluid Film Vibrator,” Synopses of the International Tribology Conference, Nagasaki, Vol. 2E1-2, p. 138.
Schlichting, H., 1960, Boundary Layer Theory, McGraw-Hill, New York.
Constantinescu,  V. N., and Galetuse,  S., 1976, “Pressure Drop Due to Inertia Forces in Step Bearings,” ASME J. Lubr. Technol., F98, pp. 167–174.
Missimer,  J. R., and Thomas,  L. C., 1983, “Analysis of Transitional and Fully Turbulent Plane Couette Flow,” ASME J. Lubr. Technol., 105, pp. 365–368.
Pinkus, O., and Sternlicht, B., 1961, Theory of Hydrodynamic Lubrication, McGraw-Hill, New York.
Meirovitch, L., 1967, Analytical Methods in Vibrations, MacMillan, New York.

Figures

Grahic Jump Location
Case of the plane parallel surfaces
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Geometry of the TFFV in polar coordinates (Γ, θ)
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Reverse flow at the inlet and the outlet of the step
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Photo of the TFFV test rig and the inner jacket
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Structural friction power versus speed (b̄=0.7;s̄=0.15;Ψ=0.0027)
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Theoretical and experimental angular displacement versus time (b̄=0.7;s̄=0.15;Ψ=0.0027;K=4.0 N⋅m;n=4, 8, 12 r.p.s )
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Vibration spectrum, recorded at the critical speed (b̄=0.7;s̄=0.15;Ψ=0.0027;K=4.0 N⋅m;n=8 r.p.s.)
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Theoretical and experimental angular amplitude versus speed (ζ=0.102;s̄=0.15;Ψ=0.0027;b̄=0.7;K=2.9, 4.0, 4.8 N ⋅m )
Grahic Jump Location
Theoretical and experimental angular amplitude versus speed (ζ=0.102;s̄=0.15;Ψ=0.0027;b̄=0.3, 0.5, 0.7, 0.9; K=4.0 N⋅m)
Grahic Jump Location
Amplitude of the dimensionless viscous drag moment versus relative clearance (b̄=0.2, 0.4, 0.6; s̄=0.10; 0.15)
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Schematic view of the TFFV

Tables

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